The President Trump-bashing host of the CBS “Late Show” won the weekly late-night ratings battle over his NBC rival for the 16th straight time last week — powering the show to a first-place finish for the September-May TV season.

It was the first season ratings win for CBS in 22 years — not including the 2009-10 season that featured NBC’s Conan O’Brien-to-Jay Leno fisaco.

While three nights remain in the season, Nielsen claimed Colbert’s 22,000-viewer lead over “The Tonight Show Starring Jimmy Fallon” is insurmountable.

Colbert’s political-focused monologues helped him draw more viewers than Fallon in each week since Trump was inaugurated — giving CBS a come-from-behind 3.195 million-to-3.173 million average viewer lead.

With his anti-Trump blasts, Colbert was the only late-night host to draw a larger audience this TV season — posting an 11 percent gain over 2015-16.

Fallon was down 15 percent for the season.

Going back to Week 1 of the TV season reveals just how far Colbert has come.